315 kVA Cast Resin Dry Type Transformer

315 kVA Cast Resin Dry Type Transformer is prepared for indoor cast-resin transformer duty. It covers 10kV / 11kV / 6.6kV input networks and 400V / 415V output distribution. It uses AN (Air Natural) cooling or thermal design data where specified. This series description presents the application, construction, protection, and specification details in finished product copy.

Modern Efficiency and Capacity Standards

Modern Efficiency and Capacity Standards summarizes the protection, safety, or standard-related details that matter during engineering selection.

• The 315 kVA Dry Type Transformer represents the current benchmark for medium-capacity indoor distribution, aligned with the IEC 60076 R10 preferred number series. It is engineered to deliver superior energy efficiency, complying with modern Eco-design regulations (Tier 1 / Tier 2) to minimize no-load core losses during off-peak hours.
• For projects where the single-line diagram specifies a legacy 300 kva dry type transformer, this 315 kVA unit serves as the superior technical alternative. It not only covers the required load but provides a 5% extra capacity margin. This aligns better with modern standard circuit breaker ratings (e.g., 630A ACB), optimizing the protection coordination curve.

Substation Integration Logic

For indoor cast-resin transformer duty, substation Integration Logic is treated as a practical design and selection point rather than generic catalog wording.

• Designed specifically as a versatile dry type substation transformer, this unit is often the "heart" of prefabricated compact substations (CSS) or indoor electrical rooms.
• 315 kVA dry transformer low voltage busbar terminals for easy.
• Substation coupling.
• No Oil Containment Needed: Unlike liquid-filled units that require complex concrete catch basins to contain potential spills, this dry unit can be installed directly on a simple flat floor. This simplifies the civil engineering requirements for the substation significantly.
• Close-Coupling: The terminal layout is optimized for direct coupling with Low Voltage (LV) distribution boards or Medium Voltage (MV) ring main units, reducing cabling complexity and saving valuable floor space in tight utility rooms.

Air Insulated Technology (Class H)

For indoor cast-resin transformer duty, air Insulated Technology (Class H) is treated as a practical design and selection point rather than generic catalog wording.

• This unit operates as an open-ventilated air insulated dry type transformer. the design uses high-grade Nomex® or Aramid paper insulation, which is vacuum-pressure impregnated (VPI) with high-temperature varnish.
• Thermal Endurance: This insulation system is rated for Class H (180°C) operation. It can withstand significant thermal spikes without degrading, offering a high overload capability during peak demand windows.
• Maintenance Visibility: The "open coil" design allows maintenance teams to visually inspect the windings for dust accumulation or obstruction during routine shutdowns-something impossible with solid cast resin blocks.

Technical Data Sheet

Technical Data Sheet provides selection data that helps compare ratings, voltage classes, and installation requirements.

• Technical Parameter.
• Specification Data.
• 315 kVA (IEC Standard).
• Legacy Compatibility.
• Replaces 300 kVA units.
• 10kV / 11kV / 6.6kV.

Typical Application Context

Typical Application Context connects the product rating with the field conditions, enclosure layout, and distribution role it is normally selected for.

• 315 kVA dry type transformer integrated into an outdoor.
• Prefabricated compact substation.
• Commercial Basements: Installed in the main utility room of office towers where fire codes prohibit oil transformers.
• Package Substations (CSS): Integrated into outdoor metal kiosks for supplying power to residential estates or EV charging hubs.
• Light Industrial Retrofits: Replacing aging 300 kva dry type transformer units to improve site energy efficiency ratings.

Electrical and Mechanical Data

The table data is organized for quick rating comparison, project specification, and transformer selection.

Product Detail Images